Adafruit
Adafruit USB C Breakout Board - Downstream Connection
The Adafruit USB C Breakout Board (Downstream Connection) gives you easy access to all the pins on a USB Type-C connector, configured for downstream device u...
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The Adafruit USB C Breakout Board (Downstream Connection) gives you easy access to all the pins on a USB Type-C connector, configured for downstream device use. Two 5.1K resistors on the CC1 pins signal the upstream host to provide 5V at up to 1.5A, mimicking classic USB 2.0 behaviour.
For most projects, simply connect VBUS to your 5V input, GND to ground, and D+/D- as usual. The CC and SBU pins are broken out for advanced use cases like detecting cable polarity or sending sideband data, but can be left disconnected for standard USB 2.0 operation.
Key Features
- USB Type-C Connector – Symmetric, reversible connector for modern USB connections
- Downstream Configuration – Pre-configured with 5.1K CC resistors for device/sink mode
- All Pins Broken Out – Access to VBUS, GND, D+, D-, CC1, CC2, and SBU pins
- USB 2.0 Compatible – Works as a drop-in replacement for Mini or Micro B connectors
- Up to 1.5A – CC resistor configuration requests up to 1.5A from the host (actual current depends on the upstream source)
- Breadboard Friendly – Standard 0.1" pin spacing
- Compact Size – 20.4 × 14.2 × 5.0 mm (0.8" × 0.6" × 0.2")
Ideal For
- Upgrading projects from Micro B or Mini B to USB-C
- Prototyping USB-C powered devices
- USB 2.0 data connections with a modern connector
- Learning about USB-C pin configuration and signalling
Package Contents
- 1× Adafruit USB C Breakout Board - Downstream Connection
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- Type-C
- USB Type-C (USB-C) is a small, reversible USB connector used for charging, power, and data transfer on many modern devices. A Type-C port or plug indicates the cable and charger connection needed to power, charge, or communicate with a device.
- USB 2.0
- USB 2.0 is a widely used wired standard for carrying both data and power between a device and a computer or other compatible host, with data rates up to 480 Mbps. It indicates the kind of port a device uses and that it should work with most modern and many older computers.
- USB Type-C
- USB Type-C is a small, reversible USB connector used for power, data and sometimes video on many modern devices. The connector itself does not guarantee a particular speed or voltage, so check the supported USB version, data rate and whether it carries more than 5V via USB Power Delivery.
- USB-C
- USB-C is a small, reversible USB connector that can carry power, data and, on some devices, video over a single cable. The same connector can range from charging only to high-speed data, so the functions a given port actually supports vary.
- VBUS
- VBUS is a label for a bus or supply voltage. Most commonly it is the +5V power line carried over USB, though on power-monitoring hardware it instead marks the bus-voltage input being measured, so check which sense applies before connecting power or a measurement point.
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